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|
{
config,
pkgs,
lib,
...
}:
let
inherit (lib)
mkIf
mkOption
mkEnableOption
mkPackageOption
getExe
;
inherit (lib.types) submodule;
cfg = config.services.watt;
format = pkgs.formats.toml { };
cfgFile = format.generate "watt-config.toml" cfg.settings;
conflictingServices = [
"power-profiles-daemon"
"auto-cpufreq"
"tlp"
"cpupower-gui"
"thermald"
];
in
{
options.services.watt = {
enable = mkEnableOption "automatic CPU speed & power optimizer for Linux";
package = mkPackageOption pkgs "watt" { };
settings = mkOption {
default = { };
type = submodule { freeformType = format.type; };
description = "Configuration for Watt. Options at https://github.com/notaShelf/watt";
};
};
config = mkIf cfg.enable {
assertions = map (service: {
assertion = !config.services.${service}.enable;
message = "You have set services.${service}.enable = true; which conflicts with Watt.";
}) conflictingServices;
environment.systemPackages = [ cfg.package ];
# This is necessary for the Watt CLI. The environment variable
# passed to the systemd service will take priority in read order.
environment.etc."watt.toml".source = cfgFile;
services.dbus.packages = [ cfg.package ];
systemd.services.watt = {
wantedBy = [ "multi-user.target" ];
conflicts = map (service: "${service}.service") conflictingServices;
serviceConfig = {
WorkingDirectory = "";
ExecStart = getExe cfg.package;
Restart = "on-failure";
RuntimeDirectory = "watt";
RuntimeDirectoryMode = "0755";
};
};
};
}
|
